Most human males should be castrated.

Men commit almost all rape and murder, but no one seems to think this is a problem we need to do anything about. If any other group committed 90% of serious crimes – let's say immigrants – people would be calling for them to be rounded up and exiled. But when it's men, that's just the way things are, nothing to be done about it.

But we know exactly what to do about it when we're talking about other species. We castrate male cattle because bulls are dangerous and steer aren't. Violent criminals typically have elevated testosterone levels. It doesn't take a genius to realize that putting men on testosterone-blockers is going to make them less dangerous.

What will be the other effects?

1. Men will be be weaker—Meh, physical strength is less useful now than it was in the past.
2. They'll have less hair on their bodies and more on their heads—Awesome.
3. They'll won't be able to get hard—That's what viagra is for.
4. They'll lose fertility—They can go off blockers while they're trying to have a child. Or you could just have a small number of uncastrated sperm donors.

I'm an anarchist, so I don't want to force this on anyone. But if I believed in prisons or police, I would also believe in mandatory castration.